Optical imaging lens
US10386607B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2017 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Nov 22, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical imaging lens includes a first lens of negative refractive power, a second lens of negative refractive power and of an image-side surface with a concave portion near its optical-axis, a third lens of an object-side surface with a convex portion near its optical-axis and an image-side surface with a convex portion near its optical-axis, a fourth lens of an object-side surface with a convex portion near its optical-axis, a fifth lens of an object-side surface with a concave portion near its periphery and an image-side surface with a concave portion in a vicinity of its optical-axis and a six lens of an image-side surface with a convex portion near its optical-axis. ALT is a total thickness of all six lens elements, AAG is a sum of all five air gaps and the first lens element has a first lens element thickness T1 to satisfy ALT/T1≤6.70 or AAG/T1≤4.71.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.